Ferdinand f



(No Model.).

P. F. GQJAE'HNKE. CUTTER BAR.

No. 458,629. Patented Sept. 1,1891.

u] I| J/VWMQU. I 13 JL JQMT MM @Qf/ UNITED STATES PATENT OFFICE.

FERDINAND F. JAEHNKE, OF JOHNSONS CREEK, WISCONSIN.

CUTTER-BAR.

SPECIFICATION forming part of Letters Patent No. 458,629, datedSeptember 1, 1891.

Application filed February 28, 1891. Serial No. 383,241. (No model.)

To all whom it may concern:

Be it known that I, FERDINAND 1 G. J AEHNKE, of J ohnsons Creek, in thecounty of Jefferson and State of Wisconsin, have invented a new anduseful Improvement in Cutter-Bars, of which the following is adescription, reference being had 'to the accompanying drawings, whichare a part of this specification.

My invention relates to a cutterbar adapted for use with a mower orreaper or binder, in which cutter-bar a series of sections with inclinedsquare or beveled edges form a serrated knife, and the cutter-bar isadapted to be reciprocated endwise through guides or slotted fingers ona finger-bar.

' entirely across that end of the section.

The object of my invention is to provide means for securing the sectionsof the knife securely but removably in the finger-bar.

In the drawings, Figure 1 is a top plan View of the complete cutter-bar,aportion being broken away for convenience of illustration. Fig. 2 is arear elevation of the device shown in Fig. 1. Fig. 3 is a transversesection on line 3 3 of Fig. 2. Fig. 4 is an enlarged view of a fragmentof the cutterbar, parts being shown in section to exhibit interiorconstruction. Fig. 5 is a fragment of a modified form of the cutter-bar.

The steel bar A is provided with a groove B from one end nearly to theother end of the bar in the upper surface at a little distance from therear edge of the bar. The knife-sections G at their rear edge are bentdownwardly, forming a flange D,extending The flange D is adapted toenter the groove B, and the number and size of the sections are such asto fill the entire length of the groove. A strap E is placed over therear portion of the section 0 above and opposite the bar A, and issecured to the bar A at one end by a screw F, passing through the strapthrough the section C and turning into the bar A, and at the other endthe strap is held tightly against the sections by a wedge-shaped key G,inserted in the upturned end or lug H of the bar A and bearing againstthe strap E. The outer end of the key G is provided with a screw-threadon which the nut I turns against the lug H to retain the key in itsseat. To take up any possible play between the sections and to wedgethem tightly in place, the inner end of the groove Bis beveled at K, sothat the flange D of the section C, bearing against the beveled end ofthe groove, will be forced against the other sections, wedging themtightly in place in the groove. The strap E thus secured in place uponthe sections C holds them securely in place, but in such manner thatthey can be readily removed for grinding or repairing or for replacing asingle section if broken by unfastening and removing the strap E.

In the modified form of device shown in Fig. 5 the inner end of thestrap E is secured to the bar A by screws F, passing through the strapand turning into the bar A at a distance of one foot apart. This meansof securing the strap E to the bar A may be used instead of the key G,although the key is preferred as being more readily removed and insertedwhen necessary.

WhatI claim as new, and desire to secure by Letters Patent, is-

1. In a cutter-bar, the combination, with a bar having a longitudinalgroove the inner end of which is beveled downwardly, of a series ofknife-sections having flanges at their rear ends adapted to enter andfill the groove in the bar and be crowded together by the bevel at theend of the groove, and a strap secured to the bar over the sections insuch manner as to hold the sections to the bar and close to each otherby forcing the end section inwardly against the bevel at the end of thegroove, substantially as described.

2. In a cutter-bar, the combination, with a bar having a longitudinalgroove the inner end of which is beveled downwardly, of a series ofknife-sections having flanges at their rear ends adapted to enter andfill the groove and be crowded together by the bevel at the end of thegroove, substantially as de scribed.

3. In a cutter-bar, the combination, with a bar having a longitudinalgroove, of a series of knife-sections having flanges adapted to enterthe groove in the bar, and a. strap In testimony whereoflafiixmysignature in bearing on the knife-sections opposite the presence oftwo witnesses. bar and secured thereto at one end by a 1 screw and atthe other end by a Wedge- LERDINAND JAEHNKE shaped key inserted in a lug011 the bar and \Vitnesses:

bearing against the strap, substantially as W'. V. WOODMAN, described. 1

WM. SCHOESHERT.

